How to pass a Backbone function as a parameter

I have the requirement to pass a function in a Backbone view into another function in the same view. I used the following approach, which works fine for global functions. But when Backbone view instances are concerned, it does not work.

I believe the problem is that the passed function has incorrect context - note that

this

prints different objects in the console.

How to correctly pass the function and call the function in the correct context?